In the water composition which contains proteolysis peptide such as collagen peptide, displeasure it is ill-smelling by combining with the fruit juice and phosphoric acid and/or that salt, but it is controlled, can obtain the composition liquid oral to which flavor is good, furthermore cohesion precipitation is controlled, is superior in retention stability.コラーゲンペプチド等のタンパク質分解ペプチドを含有する水性組成物中に、果汁とリン酸及び/又はその塩とを配合することによって、不快臭が抑制され、風味が良く、しかも凝集・沈殿が抑制され、保存安定性に優れた液体経口用組成物が得られる。